CN104549708B - A kind of spiral lift flow type liquid-solid fluid bed separation apparatus and method for - Google Patents
A kind of spiral lift flow type liquid-solid fluid bed separation apparatus and method for Download PDFInfo
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- CN104549708B CN104549708B CN201410844230.6A CN201410844230A CN104549708B CN 104549708 B CN104549708 B CN 104549708B CN 201410844230 A CN201410844230 A CN 201410844230A CN 104549708 B CN104549708 B CN 104549708B
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- 238000010168 coupling process Methods 0.000 claims abstract description 11
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A kind of spiral lift flow type liquid-solid fluid bed separation equipment and method, this equipment is mainly made up of separation chamber, power section and actuating device.The outside cylinder made for lucite of separation chamber, internal equipped with rotatable helical blade.Power section is made up of frequency converting speed regulating three-phase asynchronous electromotor and variable-frequency governor.Actuating device is made up of power transmission shaft, shaft coupling, bearing and stuffing seal.During sorting, current are fed by oral siphon, motor drives the helical blade on power transmission shaft to rotate together by shaft coupling, drives current to flow up along spiral in column body, and ore pulp is fed by feeding pipe, fluid bed is formed under spiral current effect, cleaned coal is discharged by downflow weir, and tail coal is discharged by underflow pipe, and this device structure is simple and convenient to operate, without reagent consumption, and sharpness of separation is high, the coarse slime being particularly suited for a diameter of 2 0.3mm sorts.
Description
Technical field
The present invention relates to liquid-solid fluid bed separation apparatus and method for, a kind of be applicable to the rough coal that particle diameter is 2-0.3mm
Mud carries out the spiral lift flow type liquid-solid fluid bed separation apparatus and method for sorted.
Background technology
Along with the raising of mining mechanization degree, in raw coal, fine particle content is on the increase, and brings difficulty to slurry circulating system.
At present, the heavy-media coal preparation process of China takes preparation of unsized raw coal and No severing mud to be selected in mostly, and equipment tends to maximize.This way
Although simplifying technique, but it is detrimental to improve the efficiency of separation of wholegrain level coal, and existing equipment sharpness of separation does not reaches yet
Technological requirement.The sorting particle size range of heavy medium cyclone is 50～0.15mm, but production practices show, dense medium cyclone diameter
During more than 750mm, for < sharpness of separation of 3mm grade (3～0.15mm) material is poor, the sorting granularity model of flotation device
Enclose and be 0.5mm, but it is only capable of the coarse slime to<0.3mm material realizes effectively sorting, and>0.3mm in flotation
During be easily lost in mine tailing because the carrying capability of bubble is not enough.Therefore, between gravity treatment and flotation, there is one effectively
The breach of sorting granularity, i.e. gravity treatment decline along with the reduction of granularity, the efficiency of separation, and flotation is then along with the increase of granularity, sorting
Efficiency gradually reduces.Thus granularity is in gravity treatment and flotation effectively sort scope have a common boundary near the coal grain efficiency of separation minimum.Cause
This, it is achieved the effectively sorting of coarse slime is one of current coal separation industry problem demanding prompt solution.
To the sorting of coarse slime in 2 0.25mm particle size ranges, it it is the weak link of existing coal preparation technique.Lack this granularity
The equipment of scope height sharpness of separation seriously constrains the development of coal preparation technique, is increasingly becoming coal preparation plant and ensures product quality, improves warp
The bottleneck problem of Ji benefit.Only solve the problem that effectively sorts of coarse slime processing links, the pollution to cleaned coal could be reduced, protect
Card wholegrain level quality of cleaned coal and the maximization of productivity.
At present, > screening installation of 0.3mm grade coal slime mainly has: spiral, fine coal properties matter cyclone, interference bed
Separator etc..Spiral, grading principle is the difference of different densities granule stress on spiral groove face and produces its motion point
The difference of speed, is finally presented as that the distribution along spiral groove face radial direction is different, so that the granule of different densities completes point
Choosing.Having preferable separating effect for easy coal separation, but fuselage height is big, during coal varitation, technological parameter is difficult to regulation, sorting
When density is relatively low, separating effect is poor.Its bad adaptability that fluctuates pan feeding, separating density are higher, restrict it at separation of coarse slime
The key of middle application；The density of the heavy suspension of Slime dense medium cyclone is close to separating density, thus sharpness of separation is high.Its shortcoming
It is that separating effect is easily affected by factors such as the granularity of coal slime medium solid and Algorithm of Density Control；Hindered bed separator disposal ability is big,
For its grading principle, ascending current flow velocity is the important operation parameter affecting its quality of cleaned coal and productivity, and the control to underflow
System directly affects again ascending water speed, and the underflow of hindered bed separator controls to be to lean on the mensuration to flow velocity to automatically adjust,
But existing detection and control system imperfection automatically, to the control of underflow can not real-time tracking completely, so may result in
The instability of whole assorting room, affects quality and the productivity of cleaned coal.
Summary of the invention
Technical problem: it is an object of the invention to overcome weak point of the prior art, it is provided that a kind of simple in construction, operation are just
Prompt, production cost is low, treating capacity is big, product structure is prone to the spiral lift flow type liquid-solid fluid bed separation Apparatus and method for of adjustment.
Technical scheme: the kind spiral lift flow type liquid-solid fluid bed separation equipment of the present invention, including frame, is located at dividing of upper rack
Selecting post and be located at the motor of frame lower, being provided through sorting the power transmission shaft of cylinder in described sorting post, power transmission shaft bottom depends on
Secondary being connected with motor output shaft through bearing, shaft coupling, power transmission shaft upper end is fixed on frame top through bearing；In described sorting post
Power transmission shaft on be fixed with helical blade, the bottom of sorting post is provided with underflow pipe, and underflow pipe top is provided with oral siphon, sorting post
Downflow weir sidewall is provided with the feeding pipe fed intake to sorting post, and the bottom of sorting post is provided with the seal receptacle preventing ore pulp from flowing out.
The cylinder of described sorting post is that lucite is made.
Described motor is made up of frequency converting speed regulating three-phase asynchronous electromotor and variable-frequency governor.
Use the spiral lift flow type liquid-solid fluid bed separation method of the said equipment, comprise the steps:
A. being squeezed in sorting post from oral siphon by current by force (forcing) pump, motor drives the helical-blade on power transmission shaft by shaft coupling
Sheet rotates together, drives current to flow up at sorting post internal coiling, is formed stable liquid-solid fluid bed in sorting post；
B. selected coal slime is sent in liquid-solid fluid bed sorting post by feeding pipe, under the agitation of helical blade, and upwards
Current contact with the helical blade moved upward and occur hindered falling, coarse slime granule and current move toward one another, low-density
Grain thing is risen to downflow weir by the common effect of ascending current and helical blade and discharges, and highdensity granule materials continues to sinking
Fall, is discharged by underflow pipe；
The most low-density particulate matter moves upward under spiral upward water flow effect and is got rid of by downflow weir with overflow, highdensity tail
Coal is discharged by the underflow pipe sorting column bottom, it is achieved coarse slime is by the separation of density.
The coarse slime that particle diameter is 2-0.3mm of described selected coal slime.
Beneficial effect: the present invention is on the basis of hindered bed separator, adds one group of helical blade being rotated up,
The power that reinforcing particle rises to a certain extent, reduces the solid solvent concentration of separator bottom particles, is more beneficial for different close
The displacement of degree granule.Promote with under ascending water flowing common action at helical blade eddy flow, define stable in separator body
Fluid bed, significantly reduces the solid solvent Concentraton gradient change on height of column direction, improves the pine of fluidization bed
Bulk state, promotes the fluency of granule displacement motion, thus significantly improves separating effect so that separator is at material size
Remain to during wider range obtain good separating effect, it is possible to ensure that fluid bed is stable so that separator is in material size scope relatively
Remain to obtain good separating effect time wide, by the rotating speed of regulation motor can easily according to the ature of coal situation of feed coal and
The prescription of product adjusts the situation of separator, and the subject range of material size is big, and sharpness of separation is high, can be effective
Select coarse slime to sort wide rank, difficulty, meet the needs of actual production, meanwhile, present configuration is simple, operation just
Prompt, be not required to outer adding medicine, flow process is simple, takes up an area less, economy and durability, preferably solves between the efficiency of separation and medicine consumption
Contradiction.Effectively reduce cleans ash, decrease dense medium back of the body meeting phenomenon, add the clean coal yield of coal preparation plant, improve
Economic benefit.
Accompanying drawing explanation
Fig. 1 is the liquid-solid fluid bed structural representation of spiral lift flow type of the present invention；
In figure: 1-power transmission shaft；2-bearing；3-feeding pipe；4-helical blade；5-packing seal；6-bearing；7-shaft coupling；
8-motor；9-frame；10-downflow weir；11-oral siphon；12-underflow pipe.
Detailed description of the invention
Below in conjunction with the accompanying drawings one embodiment of the present of invention is further described:
Shown in Fig. 1, the spiral lift flow type liquid-solid fluid bed separation equipment of the present invention, mainly by power transmission shaft 1, bearing 2, feeding pipe
3, helical blade 4, packing seal 5, bearing 6, shaft coupling 7, motor 8, frame 9, sorting post are constituted.Described divides
The cylinder selecting post is that lucite is made, and described motor is made up of frequency converting speed regulating three-phase asynchronous electromotor and variable-frequency governor.
Sorting post is located at the top of frame 9, and motor 8 is located at the bottom of frame 9, is provided through sorting cylinder in described sorting post
Power transmission shaft 1, power transmission shaft 1 bottom is connected with motor 8 output shaft through bearing 6, shaft coupling 7 successively, power transmission shaft 1 upper end warp
Bearing 2 is fixed on frame 9 top；Being fixed with helical blade 4 on power transmission shaft 1 in described sorting post, the bottom of sorting post sets
Having underflow pipe 12, underflow pipe 12 top to be provided with oral siphon 11, downflow weir 10 sidewall of sorting post is provided with to sorting what post fed intake
Feeding pipe 3, the bottom of sorting post is provided with the seal receptacle 5 preventing ore pulp from flowing out.The bottom of sorting cylinder is provided with oral siphon 11, water
Stream is fed by it, and frequency converting speed regulating three-phase asynchronous electromotor 8 drives the helical blade 4 on power transmission shaft 1 to turn together by shaft coupling 7
Dynamic, drive current to flow up along spiral in sorting column body.
The spiral lift flow type liquid-solid fluid bed separation method of the present invention, specifically comprises the following steps that
A. by force (forcing) pump, current are squeezed in sorting post from oral siphon 11, enter separation chamber, frequency control three-phase asynchronous electric
Machine 8 drives the helical blade 4 on power transmission shaft 1 to rotate together by shaft coupling 7, drives current at sorting post internal coiling to upstream
Dynamic, in sorting post, form stable liquid-solid fluid bed sorting environment；
B. sending in liquid-solid fluid bed sorting post by selected coal slime by feeding pipe 3, the particle diameter of selected coal slime is 2-0.3mm's
Coarse slime, under the agitation of helical blade 4, contacts with current upwards and the helical blade 4 moved upward and occurs interference heavy
Fall, forms stable fluidization bed, ore pulp and current move toward one another, coarse slime granule and current move toward one another, low-density
Particulate matter is risen to downflow weir 10 by the common effect of ascending current and helical blade and discharges, highdensity granule materials continue to
Lower sedimentation, is discharged by underflow pipe 12；
The most low-density particulate matter moves upward under spiral upward water flow effect and is got rid of by downflow weir 10 with overflow, high density
Tail coal discharged by the underflow pipe 12 sorting column bottom, formed ore pulp assorting room, finally realize coarse slime by density point
From.
Claims (5)
1. a spiral lift flow type liquid-solid fluid bed separation equipment, it is characterized in that: it includes frame (9), is located at the sorting post on frame (9) top and is located at the motor (8) of frame (9) bottom, it is provided through sorting the power transmission shaft (1) of cylinder in described sorting post, power transmission shaft (1) bottom is connected with motor (8) output shaft through bearing (6), shaft coupling (7) successively, and power transmission shaft (1) upper end is fixed on frame (9) top through bearing (2)；It is fixed with helical blade (4) on power transmission shaft (1) in described sorting post, the bottom of sorting post is provided with underflow pipe (12), underflow pipe (12) top is provided with oral siphon (11), downflow weir (10) sidewall of sorting post is provided with the feeding pipe (3) fed intake to sorting post, and the bottom of sorting post is provided with the seal receptacle (5) preventing ore pulp from flowing out.
Spiral lift flow type liquid-solid fluid bed separation equipment the most according to claim 1, it is characterised in that: the cylinder of described sorting post is that lucite is made.
Spiral lift flow type liquid-solid fluid bed separation equipment the most according to claim 1, it is characterised in that described motor is made up of frequency converting speed regulating three-phase asynchronous electromotor and variable-frequency governor.
4. the spiral lift flow type liquid-solid fluid bed separation method using equipment described in claim 1, it is characterised in that comprise the steps:
A. by force (forcing) pump, current are squeezed in sorting post from oral siphon (11), motor (8) drives the helical blade (4) on power transmission shaft (1) to rotate together by shaft coupling (7), drive current to flow up at sorting post internal coiling, formed stable liquid-solid fluid bed in sorting post；
B. selected coal slime is sent in liquid-solid fluid bed sorting post by feeding pipe (3), under the agitation of helical blade (4), contact with current upwards and the helical blade (4) moved upward and hindered falling occurs, coarse slime granule and current move toward one another, low-density particulate matter is risen to downflow weir (10) by the common effect of ascending current and helical blade and discharges, highdensity granule materials continues sedimentation downwards, underflow pipe (12) discharge；
The most low-density particulate matter moves upward under spiral upward water flow effect and is got rid of by downflow weir (10) with overflow, and highdensity tail coal is discharged by the underflow pipe (12) sorting column bottom, it is achieved coarse slime is by the separation of density.
Spiral lift flow type liquid-solid fluid bed separation method the most according to claim 4, it is characterised in that: the coarse slime that particle diameter is 2-0.3mm of described selected coal slime.
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| CN201410844230.6A CN104549708B (en) | 2014-12-30 | 2014-12-30 | A kind of spiral lift flow type liquid-solid fluid bed separation apparatus and method for |
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| CN201410844230.6A CN104549708B (en) | 2014-12-30 | 2014-12-30 | A kind of spiral lift flow type liquid-solid fluid bed separation apparatus and method for |
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| CN104941743B (en) * | 2015-07-01 | 2017-08-25 | 中国矿业大学 | A kind of coal-grinding apparatus and method |
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| WO1995008394A1 (en) * | 1993-09-23 | 1995-03-30 | Industrial Separations Engineering Ltd | A method and apparatus for separating articles of different densities |
| CN201052472Y (en) * | 2007-05-17 | 2008-04-30 | 中国矿业大学 | Liquid-solid fluid bed coarse slime size classification grading device |
| CN101391236B (en) * | 2008-10-25 | 2011-11-02 | 中国矿业大学 | Multi-product liquid-solid fluid bed separation classification device and method |
| CN101402063B (en) * | 2008-11-04 | 2011-06-29 | 中国矿业大学(北京) | Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof |
| CN202410817U (en) * | 2011-12-20 | 2012-09-05 | 华北科技学院 | Three-product liquid-solid fluidized bed separator |
| CN204523209U (en) * | 2014-12-30 | 2015-08-05 | 中国矿业大学 | A kind of spiral lift flow type liquid-solid fluid bed separation equipment |
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Address after: 221116 Research Institute of China University of Mining and Technology,, Jiangsu Applicant after: China University of Mining & Technology Address before: 221116 Research Institute, China University of Mining and Technology, Xuzhou University, Jiangsu, China, Applicant before: China University of Mining & Technology |
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